Railway-axle journal-bearing



(No Model.)

J. KRITGH.-. RAILWAY AXLE JOURNAL BEARING.

No. 352,876. Patented Nov. 16, 1886.

Fiyl.

INVENTQR WITNESSES UNITEi) STATES ATENT Fries..-

JACOB KRITOH, OF CLEVELAND, OHIO.

RAILWAY-AXLE JOURNAL-BEARING.

fiPECIFICAIION forming part of Letters Patent No. 352,876, datedNovember 16, 1886.

Application filed August 21, 1886. Serial No. 211,520. (No model.)

To all whom it may concern:

Be it known that I, J AOOB KRITOH, of Cleve- -land, in the county ofGuyahoga and State of Ohio, have invented a certain new and ImprovedRailway-Car Journal Box or Bearing, (technically known as brasses,) thenature of which consists ofa box having its journalbearing surfacecomposed of a compound or amalgam of metals suitable for said purpose,and the back or top thereof formed of castiron or its eqnivalent,incontact therewith by the force of adhesion, the'said journal-bearinggreat pressure, strain, and thrust to which they are more or lesssubjected,they often crack or break to such a degree as to render themnot only unfit for use, but also dangerous and resultant in seriousaccidents.

It is the purpose of this improvement to make the journaLbearings (orbrasses) with a re-enforeed backing or top of cast-iron or itsequivalent, to prevent. this destruction of the bearings and its resultsbefore mentioned.

Figure l is a perspective view of a railwaycar-axle journaL-bearing.Fig. 2'is a transverse section, and Fig. 3 is alongitudinal verticalsection.

The drawings represent a special form of a journal-bearing. Theimprovement is, however, applicable to other forms of axle-bearingswithout departing from the nature of said invention.

In the drawings, A, Fig. 1, represents the journal-bearing as anentirety, B being the bearing-surface for the axle,and made of acompound or amalgam of metals suitable for the purpose designed,preferably composed of tin, one part, copper seven parts, andone-sixtyfourth part of phosphorus,which are combined by meltingtogether,and form that part of the bearing indicated at 0 below the lineD. The part above the line D or top EG is of cast-iron or itsequivalent. At the end is a segmental shoulder, F. Above and back of thecollar is a flange, G, Figs. 1 and 2. The sides at HH are shaped foradaptation to a certain construction of housing or pedestals of thecars, which sides may be changed according to the nature of the case.The purpose of shaping the sides H H and flange G as shown is foradapting and holding the bearing in the housing and in The segmentalshoulder relation to the axle. F is to prevent the bearing of thecollar, by the lateral force'of the axle, from cutting into the faceB'of the journal-bearing.

The ordinary axle journal bearings -(or brasses) become cracked, broken,or split usually in the radii of its center and longitudinally, owing tothe vertical and longitudinal strain and thrust of the train. At timesthe bearing spreads away from the journal in the line a a, Fig. 2, sothat only about the upper part, ate 0, will be upon the axle-journal. Inthis way the bearing is either soon worn through, split, or cracked intwo, and the journal cut thereby. This is especially the case in firstusing new bearings, which are so liable to become a hot box. In thiscondition the result is that the bearing will more readily spread fromthe journal, leaving only a portion of the bearing for the journal,which is soon cut through or broken. By re-enforcing the bearing (orbrass) by a backing of cast-iron this spreading of the bearing iseffectually prevented, as the re-enforcing metal E is of such rigidtenacious character as to resist the more pliable and yielding nature ofthe compound metal part '0 of the bearing.

The two physical conditions of the metallic parts 0 and E are such thatwhile theformer is susceptible .of more or less pliable extension andabrasion in its relation to the axle-journal the cast-iron backing,conversely to this, resists tensile strain in all directions initsadhesion tothe section or part 0, also resistant to the crushing-weight.

When a new bearing is used on a worn axlejournal, it is advisable toline the face of the bearing with Babbitt metal I, Figs. 2 and 3, for

2. A jou rnal box or brass consisting of a brass 1 5 0r bronze basehaving a journal-receiving recess therein and a re-enforce backing ofcastiron upon the base, the Wholeofsaid i e-enforce being above thejournal-recess of the base and cohesively connected thereto uponsubstan- 2o tially a straight line, as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

f JACOB KRITCH. Witnesses:

W. H. BURRIDGE, B. F. EIBLER.

